Cisco 400-007 Practice Test - Questions Answers, Page 11
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Which mechanism provides Layer 2 fault isolation between data centers?
fabric path
OTL
advanced VPLS
LISP
TRILL
You have been tasked with designing a data center interconnect to provide business continuity You want to encrypt the traffic over the DCI using IEEE 802 1AE MACsec to prevent the deployment of any firewall or IPS. Which two interconnect technologies support MACsec? (Choose two.)
EoMPLS
MPLS Layer 3 VPN
DMVPN
GET VPN
KVPLS
While reviewing an existing network design, you are discussing the characteristics of different STP versions. Which protocol minimizes unicast flooding during a Topology Change Notification in a Layer 2 switched network with many
VLANs?
PVRSTP
MST
STP
PVSTP+
A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed Which two of these actions would reduce that delay? (Choose two.)
Increase network stability.
Reduce the time for the network to reconverge.
Increase the notification of interface flaps.
Enable lower data link layer recovery systems to have an opportunity to restore the interface
Which two possible drawbacks should you consider when introducing Network Functions Virtualization in a network design? (Choose two)
Bandwidth utilization increases
Traffic flows are suboptimal
High-end routers are required to support NFV
OpenFlow must be supported in the network
An SDN orchestration layer is required to support NFV
You are designing an Out of Band Cisco Network Admission Control. Layer 3 Real-IP Gateway deployment for a customer Which VLAN must be trunked back to the Clean Access Server from the access switch?
authentication VLAN
user VLAN
untrusted VLAN
management VLAN
A service provider hires you to design its new managed CE offering to meet these requirements
• The CEs cannot run a routing protocol with the PE
• Provide the ability for equal or unequal ingress load balancing in dual-homed CE scenarios.
• Provide support for IPv6 customer routes
• Scale up to 250.000 CE devices per customer.
• Provide low operational management to scale customer growth.
• Utilize low-end (inexpensive) routing platforms for CE functionality.
Which tunneling technology do you recommend?
FlexVPN
point-to-point GRE
DMVPN
LISP
Which design principal improves network resiliency?
Added load-balancing
Added redundancy
Added confidentiality
Added reliability
When designing a WAN that will be carrying real-time traffic, what are two important reasons to consider serialization delay? (Choose two )
Serialization delays are invariable because they depend only on the line rate of the interface
Serialization delays are variable because they depend on the line rate of the interface and on the type of the packet being serialized.
Serialization delay is the time required to transmit the packet on the physical media.
Serialization delays are variable because they depend only on the size of the packet being serialized
Serialization delay depends not only on the line rate of the interface but also on the size of the packet
Which two aspects are considered when designing a dual hub dual DMVPN cloud topology? (Choose two)
will only work with single-tier headend architecture
hub sites must connect to both DMVPN clouds
recommended for high availability
spoke-to-spoke traffic will transit the hub unless spokes exchange dynamic routing directly
requires all sites to have dual Internet connections
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